There are 30 first grade children, 45 second grader children, and 35 third grade children in a school. What is the conditional probability of choosing a second grade child, given that either a first grade or a second grade child was chosen?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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There are 30 first grade children, 45 second grader children, and 35 third grade
children in a school. What is the conditional probability of choosing a second grade
child, given that either a first grade or a second grade child was chosen?
1) 0.40
2) 0.60
3) 0.27
4) 0.41
Transcribed Image Text:There are 30 first grade children, 45 second grader children, and 35 third grade children in a school. What is the conditional probability of choosing a second grade child, given that either a first grade or a second grade child was chosen? 1) 0.40 2) 0.60 3) 0.27 4) 0.41
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